18747140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21799}}^1$

素因数の和:21851

約数の個数: 24

約数和(自身を含む): 40286400

約数和(自身を除く): 21539260

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21799, 43598, 87196, 108995, 217990, 435980, 937357, 1874714, 3749428, 4686785, 9373570, 18747140]

約数ペア:

[(1, 18747140), (2, 9373570), (4, 4686785), (5, 3749428), (10, 1874714), (20, 937357), (43, 435980), (86, 217990), (172, 108995), (215, 87196), (430, 43598), (860, 21799)]